Street-cleaning machine



OC- 29, 1929- E. T. BIRDSALL. 1,733,523

STREET CLEANING MACHINE Filed March 5. 1926 V INVE/voR.

mJy/Adda@ Patented Oct. 29, 1929 UNITED STATES 1min-:lary OFFICE EDWARD T. BIRDSALL, OF CLEVELAND, OHIO, ASSIGNOR TVO OHARLES H. BUTLER, OF

,- OAKLAND, CALIFORNIA f STREET-CLEANING MACHINE Application filed March 6, 1926. rkSerial N0.y92,668. y

particles of refuse from the air, discharge the cleansed air into the atmospheraand collect both the heavy and light refuse into receptacles or hoppers. Such a machine forms the subject matter of Patents Nos. 808,006, 880,- 124 and 909,865 granted to Charles H. Butler, and the object of thisinvention is to provide an improvement in such machines, such iinprovement residing particularly in means :tor conveniently shaking the dust collecting tubes to drop the dust collected thereon.

In the accompanying drawing I have shown 9 one specific embodiment of my invention, but

it will be understood that the invention can be otherwise embodiedy and that the drawing is not to be construedas defining or limiting the scope of the invention, the claims appended to this specification being relied upon for that purpose.'y t

Referring to the figuresof the drawing.: Figure l is aside elevation, partiallyin section, showing a street cleaning machine em,-

i bodying my invention. s

Figure 2 is a plan sectional view taken on line II-II of Fig. l. n The machine shown in Fig. l is a self-pro'- pelled street' cleaning machine having a ""5 sweeping broom'l'and mechanism within the kbody 2 .tor receiving the refuse and carrying the sanieto containers therein. The fine particles of dust are carried upwardly in the' direction of thearrows by'a blower on a shaft 3. This draught of air` carries the dust into a chamber 4. From thence the air passes into dust collecting tubes 5 and outwardly through the tubes and out of .the body 2 through slots beneath louvers at`6. Both ends of the tubesy l? 5 are open to the kchamber 4, but the chamber surrounding thetube's is separatedy from'rthe n chamber 4 by partitions 7 and 8 ksupporting the ends of the tubes.y

wardly through the meshes thereof, but which will retain the finest ydust within the tubes. f

The tubes may be ymounted in any desired manner.' Adustreceiving hopper 9 is located beneath the tubes. A considerable portion of l the dustwilly cling to the tubesinstead of dropping into the hopper and my invention herein provides means convenient to the opeli'ator for shaking the tubes to dislodge this cust. f

A pair of rodsk extend longitudinallyy through the tube chamber and areprovided with transversely extending bars ll thereon between the adjacent rows of tubes. The rods are movably supported by'links 12 within the' tube chamber. The torwardends of therods extend through the front wall of the housing and are provided with an operating handle 13` thereon, adjacent thedrivers seat. Theconstruction is such that the driver rcan grasp the yhandle '13 and rapidly reciprocatethe rods longitudinally in a manner shaking the tubes and causing the clinging dust to drop there,-

i'rom into the hopper.

Having thus described my invention, what Iclaimis: .v *y

In combination: with a dust chamber, ya

dust-collector comprising a plurality of rela-k tively spaced downwardly extending dust settling tubes communicating at opposite ends with the chamber and through which the dust laden airis directed from the dust chamber,

the spaces between the tubes intermediate the yopposite ends thereof` being separated from the dust chamberand beingfprovided with outlet openings whereby the dust ladenair will pass into the tubes through the walls oit y the tubes and out of the outlet openingsa rack 'extending longitudinallyy and transverselybetween the tubes in a position adapted tocome into contact with all ofthe tubes upon longitudinal movement of the rack, said l rack being looselysuspended and capable of operation to shake the tubes in a mannerdislodging the ydust collected therein.

rlhe tubes 5 consist of thin closely woven w Cloth whichzwill'allow the air to pass Out-k y y10e f EDWARD rr. BiRDsALL. f f 

